<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<!-- script标签一旦引入外部文件就不可以在内部书写js代码了-->
<script type="text/javascript" src="../js/demo2.js"></script>

<script type="text/javascript">

    let str = String
    str="\"我好想你!\"";

    //单行注释
    //请规范书写注释
    /*
    多行注释
    ...
    * */
    alert("inner js")
    alert(typeof str)
    alert(str)
</script>



</body>
</html>
